42164-45-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42164-45-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,6 and 4 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 42164-45:
(7*4)+(6*2)+(5*1)+(4*6)+(3*4)+(2*4)+(1*5)=94
94 % 10 = 4
So 42164-45-4 is a valid CAS Registry Number.